Evolution:
Population:
Species:
Evolution by Natural Selection:
The IUCN recognizes 1 species and 9 subspecies of giraffe.
However, the Giraffe Conservation Foundation performed the first-ever comprehensive DNA sampling of all major populations of giraffe throughout Africa, revealing 4 distinct species and several subspecies.
Generation time determines the rate (speed) of evolution
How does this related to the dualism between ecology and evolution?
How many species of bees do you think there are in the USA?